My OC, Akira Hyuga has invented several jutsu to give himself the element of surprise in a battle(and I get bored enough to make up jutsu). Akira specializes in fire, water, and wind elements.
Akira uses these unique jutsu in most battles against competent opponents:
Fire Clone: it's like shadow clone, or water clone except fire clones explode like bombs, but they used more chakra than water or shadow clones.
Razor Wind Rotation: the Hyuga clan's rotation combined with wind chakra to to make it shred anything it hits.
these Jutsu are used as special attack reserved for the most dangerous opponents since they are exausting to use (like Kakashi's Sharingan):
Byakusharingan: both sharingan and byakugan active at the same time, with a cumulative effect (ie can copy jutsu observed with byakugan).
Ice Armor: A layer of ice used as armored plates, and weapons.
These jutsu are last resorts since they can't be performed without the aid of a curse mark or a demon spirit.
Flaming Vortex: The fire version of the Rasengan. Creates a large tornado of flames that is launched towards its target.
Blood Soul: This can only be used with Akira's cursemark. His blood gains healing powers, and when another persons blood touches his body it is converted into chakra for Akira to use. Very destructive to his body in the long term. one battle with this jutsu can cut a year or more off your life span.